High Frequency Welding ERW660 Black Steel Pipe Machinery Diameter 325-660mm API Tube Mill
ERW660 high frequency longitudinal welded pipe production line / pipe making machine / tube mill is designed to produce welded pipes of 325mm - 660mm in OD and 6.0mm - 20mm in wall thickness, as well as corresponding square and rectangular pipe. Within suitable range of pipe diameter and wall thickness, pipe production speed can be adjusted.
Usage and Technology
API pipe mill is specialized for manufacturing straight welded pipe for petroleum and gas pipelines. Taking hot-rolled steel as raw material, it produce required pipes through cold roll forming and suitable welding methods like H.F. welding, submerged arc welding and so on. The whole production line adopts ‘ZTF’ forming technology.
Scroll up→ Uncoiler→ Straightening end→ Flattener→ Auto-Shear and Welding→ Horizontal Accumulator→ Strip UT→Forming(ZTF) → H.F. induction welding→ Removing external burr→ Removing inner burr→ Burnishing→ Online Detection→ Seam annealer→ Air cooling→ Water cooling→ Sizing→ Cut off→ Roll table→Flattening Test→ End-facing and chamfering→ Hydrostatic test→Off-line UT test→ Drifter→ inspection→Weighing and length measurement → Coating & Printing→ Packing→ Warehouse
|Round pipe||Cold roll forming process||Good roller design|
|ZTF forming process||Save alt least 60% roller cost with electric control adjustment|
|Square & rectangular tube||General round-to-square process||Stable forming process|
|Round-to-square with Turks head||Good pipe quality|
|Process of directly square-to-square(DSS)||One set of roller can produce all tubes with electric control and automatic adjustment|
√ Apply to high strength steel and big thickness
√ Raw material can be steel coil and single plate
√ When producing round pipe, it can utilize ZTF forming technique
√ When producing square & rectangular tube, it can utilize directly square-square (DSS) technique
|Product&yield||Round Pipe||325mm-660mm Thickness:6.0mm-20.0mm|
|Square & rectangle tube||250mm×250mm -500mm×500mm Thickness:6.0mm-20.0mm|
|Length||6m-12m Length Tolerance: ±3mm|
|Production Speed||20 m/min|
|Consumption||Mill installed capacity||1200 kw|
|Line Area||350m(length) ×35m (width)|
|Raw Material||Carbon steel coil & steel plate Q235B(ASTM GR·D,σs 230) & High-strength steel|
Note: We can design and manufacture pipe making machine according to customers' requirements.
Please feel free to contact me.